Improvement in seed-drills



UNIT D STATES ATENT Fries.

JOHN F. KELLER, OF GREENOASTLE, PENNSYLVANIA.

IMPROVEMENT IN SEED-DRILLS.

Specification forming part of Letters Patent No. 44,098, dated September 6, 1864.

To all whom it may concern:

Be it known that I, JOHN F. KELLER, of Greencastle, in the county of Franklin and State of Pennsylvania, have invented a new and useful Improvement in Seed-Planters; and I do hereby declare that the following is a full and exact description thereof, reference being bad to the accompanying drawings, and to the letters of reference marked thereon.

In the accompanying drawings, Figure 1 is a side view of a boot of a seed-drill with the levers and spring attached, showing the action of my improvement; Fig. 2, a section of the rubber spring and caps which secure it in place.

In the manufacture and repair of wheatdrills I have found that the rubber springs having a bolt passed through them are often out by such bolt, so as to lose much of the original power of the spring. In order to remedy this difficulty I secured both ends of the spring by caps, which will prevent the lateral cutting of the spring from the action of the bolt.

In the drawings, A represents a boot of a seed-drill detached,\vith its levers,fr0m the machine. The levers B are attached to the frame of the machine and the boot A. This boot, with its shovel I, is dragged in the usual manner. The levers B and O are so arranged and hinged that the point or shovel I of the boot, upon meeting a stone or other obstruction, mayturn backward and upward without breaking, and then return to its place after passing such obstruction. The lever G is acted upon by the rubber spring D, and has the motion indicated by red lines in Fig. 1, where the motion of the boot is also shown. When the boot is thus turned backward and the spring D is compressed the upper end of the spring is held in place by the cap E, and the lower end of the form of the caps E and and G may be varied, or other equivalent means may be employed for the same purpose without departing from my invention. This arrangement may be used for cultivators and plows.

I do not broadly claim the use of rubber springs in seed-planters.

I am also aware that various devices have been used for confining rubbersprin gs. 'Therefore I confine myself to the peculiar combination herein described.

Having thus fully described my improvement, what I claim as my invention, and desire to secure by Letters Patent of the United States, is

1. The combination of the rubber spring D with the caps E and Gr, or their equivalents, the central rod, L, and the shovel or share, substantially in the manner and for the purposes set forth.

2. The arrangementand combination of the lever O, stirrup H, provided with cap G,with the rod L and cap E, substautiallyin the manner and for the purposes set forth.

JOHN F. KELLER.

'Witnesses:

DANIEL BREED, J OHN ROWE, Sr. 

